#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>

int main()
{
	int n = 0;
	scanf("%d", &n);
	int sum = n;
	int m = n;
	for (int i = 0; i < 4; i++)
	{
		 n = m + n * 10;
		 sum += n;
	}
	printf("%d", sum);
	return 0;
}